iec60364-4-41{ed5.0}en_d

INTERNATIONALSTANDARD IEC 60364-4-41 Fifth edition 2005-12 This is a free 6 page sample. Access the full version online. GROUP SAFETY PUBLICATION Low-voltage electrical installations – Part 4-41: Protection for safety – Protection against electric shock This English-language version is derived from the original bilingual publication by leaving out all French-language pages. Missing page numbers correspond to the Frenchlanguage pages. Reference number IEC 60364-4-41:2005(E) technical committees and date of publication. amendments and corrigenda.ch) • Catalogue of IEC publications The on-line catalogue on the IEC web site (www. respectively. IEC 34-1 is now referred to as IEC 60034-1.Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. is also available from the following: • IEC Web Site (www. Consolidated editions The IEC is now publishing consolidated versions of its publications.iec. The technical content of IEC publications is kept under constant review by the IEC. Further information on IEC publications This is a free 6 page sample.ch/online_news/ justpub) is also available by email.iec. thus ensuring that the content reflects current technology. is available in the IEC Catalogue of publications (see below) in addition to new editions. Please contact the Customer Service Centre (see below) for further information.iec.2 refer. please contact the Customer Service Centre: Email: custserv@iec. edition numbers 1.1 and 1. including its validity. withdrawn and replaced publications.0. 1.ch/searchpub) enables you to search by a variety of criteria including text searches. as well as the list of publications issued. the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2. Access the full version online. For example. • Customer Service Centre If you have any questions regarding this publication or need further assistance. Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication. • IEC Just Published This summary of recently issued publications (www. On-line information is also available on recently issued publications. For example. to the base publication. as well as corrigenda. Information relating to this publication.ch Tel: +41 22 919 02 11 Fax: +41 22 919 03 00 . PO Box 131.ch Web: www. CH-1211 Geneva 20. electronic or mechanical. International Electrotechnical Commission. rue de Varembé. including photocopying and microfilm.iec. 3. without permission in writing from the publisher. Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: [email protected] Commission Electrotechnique Internationale International Electrotechnical Com m ission Международная Электротехническая Комиссия PRICE CODE For price. Access the full version online. see current catalogue V . GROUP SAFETY PUBLICATION Low-voltage electrical installations – Part 4-41: Protection for safety – Protection against electric shock © IEC 2005 Copyright .all rights reserved No part of this publication may be reproduced or utilized in any form or by any means.INTERNATIONAL STANDARD IEC 60364-4-41 Fifth edition 2005-12 This is a free 6 page sample. ................... 65 Figure B......2 Requirements for basic protection ........................ 37 414 Protective measure: extra-low-voltage provided by SELV and PELV .................2 Requirements for basic protection and fault protection .................................... 17 411.. 39 414.......... 23 411....................................................6 IT systems ........................................ 37 413........ 17 411...2 Requirements for basic protection .................................... 33 413 Protective measure: electrical separation .....................................................................5 410 Introduction ... 55 Annex D (informative) Correspondence between IEC 60364-4-41(2001) and the present standard................................................................................3 Requirements for fault protection ................ 41 415 Additional protection ......................................2 General ...................................................................................60364-4-41  IEC:2005 –3– CONTENTS FOREWORD......... 25 411................................................................................. 43 415............................. 61 .............................................................. 19 Table D....................................................3 Sources for SELV and PELV............................................................ 53 Table 41........................................................................... 45 Annex A (normative) Provisions for basic protection (protection against direct contact) .....................................................................................................................3 Requirements for fault protection ....................................4 Requirements for SELV and PELV circuits ..........................1 General .........................................................3 General requirements ................................................................... 11 410..1 General ........................................................................................................................................................................ Access the full version online.......................................................................................7 Functional extra-low voltage (FELV) ..........................................................5 TT systems ..........................................................................1 General ............................................................ 31 Requirements for basic protection and fault protection (protection against indirect contact) .................................1 – Maximum disconnection times ................................1 412..............................................................….........1 – Zone of arm's reach .................................................................................................... 11 410................................... 29 412 Protective measure: double or reinforced insulation.................................................................................................2 Additional protection: residual current protective devices (RCDs) ............................ 45 Additional protection: supplementary protective equipotential bonding ...................................................................................................................... 31 412.................4 TN systems .1 415.................................................................2 Normative references ............................................................................................................ 61 Bibliography.................................................... ............. 37 413............................................. 37 413........................................... 39 414.............9 This is a free 6 page sample........... 47 Annex B (normative) Obstacles and placing out of reach ....... 15 411................ 410........ 51 Annex C (normative) Protective measures for application only when the installation is controlled or under the supervision of skilled or instructed persons ............................. 15 411............................................1 Scope .................................................. 39 414............................1 – Correspondence between IEC 60364-4-41:2001 and the present standard . 41 414..................................................... 21 411................... 13 411 Protective measure: automatic disconnection of supply ... whether direct or indirect. To this end and in addition to other activities. 6) All users should ensure that they have the latest edition of this publication. any IEC National Committee interested in the subject dealt with may participate in this preparatory work. This fifth edition cancels and replaces the fourth edition. International Standard IEC 60364-4-41 has been prepared by IEC technical committee 64: Electrical installations and protection against electric shock. IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. use of. Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. employees. IEC publishes International Standards. The main changes with respect to the previous edition are listed below: – adoption of IEC 61140 terminology. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate. Technical Reports. this IEC Publication or any other IEC Publications. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense.60364-4-41  IEC:2005 –5– INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________ LOW-VOLTAGE ELECTRICAL INSTALLATIONS – Part 4-41: Protection for safety – Protection against electric shock This is a free 6 page sample. . International. Technical Specifications. IEC shall not be held responsible for identifying any or all such patent rights. 8) Attention is drawn to the normative references cited in this publication. or for costs (including legal fees) and expenses arising out of the publication. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. Use of the referenced publications is indispensable for the correct application of this publication. appropriate practical combinations of protective provision in normal service (direct contact protection) and protective provision in case of a fault (indirect contact protection). published in 2001.e. or reliance upon. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express. governmental and nongovernmental organizations liaising with the IEC also participate in this preparation. as nearly as possible. FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). 7) No liability shall attach to IEC or its directors. servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury. Their preparation is entrusted to technical committees. – layout rationalized on basis of complete protective measures (i. Access the full version online. an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. property damage or other damage of any nature whatsoever. and constitutes a technical revision. 4) In order to promote international uniformity. This is a free 6 page sample. The Part 4 series comprises the following parts under the general title Low-voltage electrical installations: Part 4-41: Protection for safety – Protection against electric shock Part 4-42: Protection for safety – Protection against thermal effects Part 4-43: Protection for safety – Protection against overcurrent Part 4-44: Protection for safety – Protection against voltage disturbances and electromagnetic disturbances The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under "http://webstore. replaced by a revised edition.ch" in the data related to the specific publication. . Access the full version online. This publication has been drafted in accordance with the ISO/IEC Directives. where the protective measure is automatic disconnection of supply.60364-4-41  IEC:2005 –7– – requirements of 471 and 481. – IT systems considered more fully. – requirements in certain cases for additional protection of socket-outlets by means of a 30 mA RCD. At this date.iec. which were included in the fourth edition have been rationalized – disconnection requirements for TT systems clarified. The text of this standard is based on the following documents: FDIS Report on voting 64/1489/FDIS 64/1500/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. withdrawn. or amended. It has the status of a group safety publication in accordance with IEC Guide 104. Part 2. the publication will be • • • • reconfirmed. 5.Part 4-41: Protection for safety Protection against electric shock Looking for additional Standards? 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